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Code History Database (December 2017) for the United Kingdom
Office for National Statistics
20 September 2023
This zip file contains the Code History Database for the United Kingdom as at December 2017. To download the zip file click the Download button. The Code History Database (CHD) contains the GSS nine-character codes, where allocated, for current and new statistical geographies from 1 January 2009. The codes consist of a simple alphanumeric structure; the first three characters (ANN) represent the area entity (i.e. type; or category of geography) and the following six characters (NNNNNN) represent the specific area instance. The CHD provides multiple functionality including details of codes, relationships, hierarchies and archived data. The CHD can be used in conjunction with the Register of Geographic Codes (RGC) that summarises the range of area instances within each geographic entity. The GSS Coding and Naming policy for some statistical geographies was implemented on 1 January 2011. From this date, where new codes have been allocated they should be used in all exchanges of statistics and published outputs that normally include codes. For further information on this product, please read the user guide and version notes contained within the product zip file.
·New entity for County Electoral Divisions (E58)
·Updates to Electoral Wards in England (E05),
Clinical Commissioning Groups in England (E38) (name changes) and Waste
Authorities in England (E50).
·Updates to all
Geography Constitutions to as at 31/12/2017
·Changes to the SI Details, Name Changes and
form design to account for December 2017 version have been made.
Please Note - Field called Combined in Equivalents.csv and in database has been removed. This field was used for QA purposes. 02/03/18. Some CCGs added to Equivalents table. (09/03/18)